<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
     table{
            width: 500px;
            text-align: center;
            border-collapse: collapse;
        }
        table,td,th{
            border: 2px solid #333; 
        }
    </style>
</head>
<body>
    <table>
        <tbody>
            <tr><th rowspan="3">商城</throwspan></th><td>手机</td><td>电池</td></tr>
            <tr><td>衣服</td><td>鞋子</td></tr>
            <tr><td>电风扇</td><td>话筒</td></tr>
        </tbody>
    </table>
</body>
</html>